chase



(No Model.) I 4 Sheets-Sheet 2.

H. A; CHASE.

- ENGRAVING MAOHINE. No. 517,680. Patented'Apr. 3, 1894.

WITNESSES: INVENTOR AT ORNE THE NATIONAL LITHOGRAFNING COMPANY.

WASHINGTON. n. c.

'(No Model.) 4-Sheets-SheeL3L- H. A. CHASE ENGRAVING MACHINE No.'517,;680. Patented Apr. 3, 1894.

wmvsssas: I mvamon j- I Wm 4 T (No'ModeL) A. CHASE. ENGRAVING MQAGHINE.

Patented Apr; 3, 1894 V f 4 SheetsSheet 4.

WITNESSES: 7 i W INVENTOB TN: rum. LMIOGRAPNING ccmuuv wAlnmaroN. b. c

HENRY AQCHA E, on BR 'To aZZ it mrty coacernk ookLrN, ASSIGNOR. ToWILLIAM-A. honor: a 00., oF-NnwYoR n. Y.

ENG v N MAC' JN SPEGIFIGATION' forming rat or m gnat 1\ r 5 1 7,eso,dated April 3,1894.

, a 1 Application filed May 29, 1898.

'Be it known that I, HENRY A.CHASE, a citizen of the United States,residing at Brooklyn, in the county of'Kings and State'of New York, haveinvented a new and usefulv Improvement in' Engraving-Machines, of whichthe following is aspecification.

My invention relates to apparatus for engraving letters, numbers a ndcharacters, upon metal work blanks, such blanks for instance as areemployed in dating and printing stamps and numbering machines.Heretofore letters, numbers or characters formed upon metal work blankshave been cut or en'- gra'ved by hand, or formed by'a rolling orknurling movement, or have' been stamped up by means of sectional'dies.All of these methods are expensive and more or less unsatisfactory inresults and the object of my a side elevation of the same.

front elevation and Fig. 4, a vertical section invention is to expediteand cheapen the pro duction of such engraved metal blanks and also toimprove the quality of the work.

In carrying out my invention I make use of a rotary bevel pointedcutter, adapted to act upon the work blank, and the mechanism employedis capable of imparting to the cutter a vertical movement into and outof contact with the work. The cutter and the mechanism'carrying the sameis also capable of an all around movement within prescribed limits bymeans of a ball and socket joint and a depending arm connected therewithon whose lower end is a pointer. A pattern plate'and pattern is employedaround and within whose sidewise upouan enlarged scale of the cuttermechanism and the ball and socket oint, and

- Serial No. 475,954. (no model.)

5, illustrates a modified form of mechan-. ism, and Fig.- 6, is a planview of the pattern and pattern plate. p, .The standard A is supportedupon a bed plate A and said standard has an opening in the lower portionof the front through which passes the arm 0. The form of the standardis'show'n by the dotted lines in Figs. 1 and 2.

Upon the face of the standard A, isa slide away c with a lug at itslower end through which passes the screw bolt K. An adjust- 'ablesliding head B can move vertically on the slide way e, the position ofthe head B, being determined by the bolt K. The upper I end of the headB is made asa projecting arm which supports-the adjustable chuck orholder )B', and a clamping bolt 0, passes through a mortise in thearmofthe head B into the holder B, to secure the parts together; the mortiseproviding for the forward and backward adjustment desired. The workblank M is supported by passing its open center 'overa boss projectingfrom the upturned portion of the adjustable chuck B, and a pivotedclamp-block b, is operated by a cam lever a to clamp and hold the workblank M, while the cutter O, is operating thereon and cutting orengraving letters, figures or charactors;

Upon top of the standard A is secured a plate N, which projects from theface of the standard and'whose outer end is' perforated and concaved toform half of a socket, and the other half of the socket is formed in theunder surface of the perforated plate D,which is secured to and upon theplate N. These sockets coincide and receive the ball E at the lower endof the sleeve Eand said ball is free to turn in said socket and thesleeve E to rock therewith. The plate F carries a-depending sleeve Fwhich sleeve setswithin the sleeve E and ball E the plateF being inclose proximity to the upper end of said sleeve E. An adjustable sleeveR preferably screw threaded at its respective ends passes through the*plate' F and down through its sleeve F and the same is provided withadjusting nuts or' collars L, L. The nut or collar comes against theupper face of the plate F and the nut or collar L below the lower end ofthe sleeve F and ball E, at a distance represented by slightly more thanthe vertical working face of the cutting tool.

Within the adjustable sleeve R, is the driving spindle P, in whoselowerendis provided a taper hole to receive the cutting tool 0. Theupper end of the spindle P, is reduced to receive the spindle pulleyJwhich is clamped to the spindle by the nut 5. The spindle pulley J restsupon the upper end of the sleeve R, and the lower end of said spindle ispreferably made flaring. The spindle pulley is driven by the endlessbelt T, and a lever f pivoted at 3 to the back of the standard A carriesat its outer end a pulley (1 around which the belt T passes to thesource of power. A helical spring 76 connected at one end to theleverfand at the other end ,to a stud projecting from the back of thestandard acts-to keep the belt T strained or taut. Au arm (3 of curvedconformation has connected at its upper end the top plate F and said armextends aroundback of the standard A and forward through the opening inits front face and. its lower vertical end is provided with anadjustable pointer I. A pattern plate G is secured to the bed plate Aupon approximately the vertical center of the driving spindle P as seenin the elevation, Fig. 1, and the surfaceof the said pattern plate isconcaved uponian arc struck from the operative center of the ball end Eand a pattern H in the form of the letter, figure or character to beengraved on the work blank is fastened in the concave center-of theplate G. A cord it passes over a pulley g from a hook upon the upper endof the arm 0, and at the lower endof this cord h is a weight i, which isalmost equal to the combined weight of the arm 0, top plate F and themovable parts sup ported by said plate F, and within the sleeve E, andball. end E. The object of this is to cause the arm 0 and its endpointer I to bear lightly upon the pattern plate G, so as to be readilymoved in any direction by the operator without tiring the hands. Smallhelical springs 1 connect the opposite faces of the arm 0, with the backedges of the standard and theirobject is to maintain the arm 0 centrallyin itsv relation to the standard.

In working the mechanism and for the sake of the illustration thepattern II to be engraved andwhich is secured to the pattern plate G, isa figure 5. (See Figs. 2 and 6.) The operator places a work blank M inposition on theadjustable chuck or holder 13 and clamps it in place bythe clamp block and cam lever described, it being understood that while.this is being done, the arm 0, plate F, sleeve F, sleeve R, spindle P,cutter O, pulley J',.nuts L L and pointer I are all slightly raised withthe pointer I turned to one side 01f the pattern plate G resting onablock slightly thicker than the pattern plate, the cutter 0 howeverbeing run rapidly by the belt T. All now being ready the operatorgraspsthe lower end of the arm 0 adjacent to the pointer I and brings thepointer over to one corner of the pattern plate and simultaneously thecutter 0 down upon the work blank. The operator now moves the pointerback and forth and in any desired direction over the pattern plateconcave from the respective edges inward to the edges of the pattern,after which the edges of the figure 5 or other letter or character arecarefully followed around with the pointer. Meanwhile the cutteroperating upon the face of the work blank has been caused to ffollowcopy on the reduced scale and the figure 5 is cut or engraved upon thework blank and the same is removed. Another blank M is now clamped inplace and a figure 5 engraved on itin like manner. Other figures,letters or characters replace the figure 5 and one another upon thepattern plate as desired. From the shape of the cutter 0 it will beunderstood that the letters, figures or characters engraved have basesthat are somewhat wider than their faces.

In the modification shown in Fig. 5 the arm 0 carrying the pointer I atits lower end is made as a yoke having a socket D' at its upper end.With the socketD' is connected a shaft R whose upper end passesfreelythrough a ball E received in asocket formed within the plates 7and 8ontop of the standard A. The ball E is received in thesocket D and it isconnected to the small yoke 0 through the baseof which passes the sleeveF. The socket plates D and N are fastened to the standard A andreceivethe ball E of the sleeve E through which. passes the sleeve F. Thepulley J and wheel blank M are the same as heretofore described. In thismodification the hand or hands grasp the lower end of the yoke C andmoveit backward and forward or sidewise in a vertical plane, and thismovement swings theparts on the central line and the cutter O, in adecreased ratio, the said cutter being caused to follow copy asthepointer is moved around the pattern and over the pattern block in themanner hereinbefore described.

I claim as my invention- 1. The combination with means forholding thearticle to be engraved, and a pattern plate, of aspindle, a tool carriedthereby, abearing or sleeve for the spindle, a universaljoint holdingthe spindle bearing. and in-which it is movable endwise, an armconnectediwith the spindle hearing at one end, and aipointer carried atits other end, whereby the engraving tool receives a proportional.movement i .dle and passing through the balliand socket device, andmeans for longitudinally adj use ing said sleeve, an arm connected tosaid sleeve and adapted to lift the sleeve, spindle 7 ward through saidopening therein and ter-.

and cutter vertica1ly, an'd' a stop for limiting the upwardymovemen't,substantiallyas set.

forth. p

I 3. In an engraving machine,'the combination with a rotarycuttingdevice and means for holding the workblank, of a supporting standardhaving an openingin the face there,-.

of, an arm connected directly with the cutter mechanism and adapted tomove the same both verticallyand laterally, said arm ex.- tending downbehind the standard and for? minating in a pointer, a pattern platelocated in front of the stand ard'and containing apattern around whichthe pointer'i's to be moved, substantially as set forth.

4. In an engraving machine, the combination with a patternplate,as'pindle and cutter, means for rotating the same, and a supporttherefor, of an arm connected to the spindle support and extendingdownward to a pattern plate and adapted to move the cutter in adecreased ratio, and a counterbalance mechani sm for the spindlemechanism and arm,

substantially as specified.

5. In an engraving machine, the combina: tion with a universal jointmechanism,"a s pindle and a cutter and a support therefor, of anpointer, a pattern plate having a concave surarm connected to thespindle support and extending downward and terminating in a face made asan are from the center of the universal joint mechanism and containing anumber, letter or character around which said pointer is adapted'tobemoved while the cut- 7 7. In an ongraving machine, .thQCOIDbiIlLr tionwith @the standard A and a basetherefor, of the socket plate N connectedto the upper end of 'the'standard and projecting therefrom,

the upper socket plate D, the sleeve E, its ball E received within andbetween said socket plates, the top plate Fandits integral sleeve Fpassing down within said sleeve and ball, the adjustable sleeve Rscrew-threaded at its respective ends and passing through theplate F andsleeve F and provided with adjusting nuts L L, the driving spindle)P'passing throughthe sleeve R, the'pulley J and belt T for rotating thesame, substantially as set forth. I Y I 8. In'an engraving machine, thecombination with the standard A and a base therefor; of the socket plateN connected to the upper end'of the standard and projecting therefrom,the upper socket plate D, the sleeve E, its ball vE received within andbetween said socket plates, the top plate F and its integral sleeve Fpassing downwithin said sleeve and ball, the adjustable sleeve Rscrew-threaded at its respective ends and passing through the plate Fand sleeve F and provided with adjusting nuts L L, the driving spindle Ppassing through the sleeve R, the pulley J and belt T for rotating thesame, a curved movable arm C to whose upper end the top plate F issecurely fastened, a pointer at the lower end of said arm 0 adapted tobemoved across the face of a pattern plate G and around and within thepattern H, whereby the cutter is moved in relation to the pointer andcaused to follow copy and whereby the cutter can, by the verticalmovementof the arm, be raised out of or brought into operative contactwith the work blank, substantially as set forth.

Signed by me this 10th day of May, 1893.

H. A. CHASE.

Witnesses:

GEO. T. PINCKNEY, HAROLD SERRELL.

